Home / 76,928.77-106,078.01-50,021.38

Finding the Fourth Proportional to 76,928.77, 106,078.01 and 50,021.38

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Solution

The fourth proportional to 76,928.77, 106,078.01 and 50,021.38 is: 68,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,928.77 : 106,078.01 = 50,021.38 : x
  2. Step 2: Convert to fraction form
    76,928.77/106,078.01 = 50,021.38/x
  3. Step 3: Cross multiply
    76,928.77x = 106,078.01 × 50,021.38
  4. Step 4: Simplify right side
    76,928.77x = 5,306,168,447.85
  5. Step 5: Solve for x
    x = 5,306,168,447.85/76,928.77
  6. Step 6: Final answer
    x = 68,975.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.